Carriage foot-brake.



PATENTED JULY 7, 1908.

C. STROHKORB. CARRIAGE FOOT BRAKE.

APPLIGATION FILED NOV.2'7.1907.

CARL STROHKORB, OF BERLIN, GERMANY.

CARRIAGE Poor-133mm.

Specification of Letters Patent.

Patented July '7, 1908.

Application filed November 27, 1907. Serial No. 404,038.

To all whom it may concern:

Be it known that I, CARL STROHKORB, a subject of the German Em eror, andresident of 7 Neue Promenade, Ber in, Germany, have invented certain newand useful Improvements in Carriage Foot-Brakes, of which the followingis a specification.

My invention relates to carriage foot brakes and consists of anarrangement for the application and release of carriage brakes in which,by depressing a foot-lever placed by the drivers seat, a tension link,which applies the brake, is wound onto a drum; by (epressing a secondfoot-lever the brake is released.

The essential feature of the invention is that the winding drum isplaced on its shaft in such a manner that it can be moved, so that itcan be brought into action or released by means of two pawls, one ofwhich is connected to the foot-lever which applies the brake, and istherefore the operating pawl.

As the application and release of the device is carried out by means oftwo foot-levers placed one behind the other in the same vertical plane,it is possible to operate these levers immediately with one foot only.

In consequence of the method of supporting the pawls which operate thewinding drum, by means of a smooth disk of corresponding diameter,common to both, they do not rest directly on the ratchet wheel attachedto the drum, and, therefore, allow the device to be easily applied orreleased with-- out shock or noise, drum.

In the accompanying drawing Figure 1 shows a general diagrammatic viewof the device which is shown as a hub-brake. Fig. 2 is a side view ofthe brake gear, with the side wall removed. Fig. 3 is a front view, andFig. 4 is a view from below, on a larger scale.

A spindle 2is fixed to a frame or lattice support 1 placed under acover, in such a manner that it "can rotate; a smooth circular disk 3and two lever-arms 4, placed close to the same, are tightly keyed on tothe spindle 2. At their outer projecting ends, these arms 4 areconnected to an operating or footlever 5 so that they can be moved. Inorder to insure that its movement is properly and forcedly guided, thislever 5 is connected to the frame 1 by means of a link 6. On the s indle2 a drum 7 is placed in such a manner that it can be moved but notrotated; it has y simply. moving the 'shown in Fi 3.

a ratchet wheel 8 rigidly attached to its side. On the opposite side ofthe drum 7 a roller 9 provided with a ring-nut is fixed, which enageswith a lever 10 at its forked end. This lever 10 is intended to move thedrum 7 when required, and to release the ratchet-wheel 8 from the pawls13 and 14. The lever 10 is fixed to a pivot 18 at a suitable placeinside the frame, in such a way that it can .be turned. The width of thering-nut of the roller 9 is so chosen that it permits the slightmovement necessary for the lever 10 inside the nut, to take lace freely(Fig. 3). At its other end the for red lever 10 is connected by a linkto a rod 11 which projects above the cover 1 and which is rovided with alate 19 at its upper end. 8n the free enc of the spindle 2 a spiralspring 12 is placed, which bears againstthe' drum 7 and serves thepurpose of keeping the latter in the position In this position, a pawl13 fixed to the lever 4, and the pawl 14, fixed to the frame 1, areengaged with the ratchetwheel 8. The spring 12 also serves the purpose,after the depression of the lever 11, 10, and the subsequent release ofthe lever 11, to return the drum 7 to its original position, whereuponthe released lever 11, 10, owing to the indirect action of this spring,is also returned to its first position.

The pawls 13 and 14 are pressed onto the ratchet-wheel 8 by means ofsprings; a art from these, however, they rest on the dis 3, the diameterof which corresponds to that of the ratchet-wheel less the length of theteeth. The object of this arrangement is to allow a cpiick, easy andnoiseless operation of the rum 7 with regard to releasing it or engagingit with the pawls. The depressed foot-lever 4, 5 will always be returnedto its first position by means of a spring 16. The tension link 20 (beltor similar arran ement), which is attached to the drum 7 ancl is woundonto the latter when the lever 4, 5 is depressed, operates a band brake21 (Fig. 1) to which it is attached, in the well known manner by adouble lever, and applies the brake.

In order to release the brake, the foot lever 11 is depressed, asalready mentioned, whereupon the drum 7 disengages the pawls 13, 14 fromthe ratchet-wheel 8.

In order to prevent the brake, when in the applied position, from beingaccidentally or unintentionally released, a fixing device 17 is providedand is fixed to a spindle 22; it can be turned by means of a key 23(Fig. 3)

so that it comes into contact with the ratchetwheel 8, whereupon thedrum 7 cannot be moved or disengaged from the pawls.

The operating and release levers 5 and 11 lie in the same verticalplane, as already mentioned so that the brake may be operated with onefoot; it may, moreover, be operated instantaneously.

What I claim as my invention and desire to secure by Letters Patent ofthe United States, is

1. In a foot brake for carriages in combi nation with the actual brakemeans, a frame, a spindle turnably arranged in the latter, a drumshiftably fixed on the said spindle, a tension link connected to thesaid drum and to the actual brake means, a foot lever for turning thesaid drum, a ratchet-wheel rigidly connected to the said drum, detentmeans adapted to engage with the said ratchet wheel, and a second footlever for shifting the said drum together with the said ratchet wheel,to disengage the latter from the said detent means, substantially as andfor the purpose set forth.

2. In a foot brake for carriages in combination with the actual brakemeans, a frame, a spindle turnably arranged in the said frame, a drumshiftably fixed on the said spindle,

a tension link connected to the said drumand to the actual brake means,an intermediate lever fastened to the said spindle, and a foot leverconnected to the said intermediate lever, a ratchet Wheel fastened tothe said drum, a awl connected with the said intermediate ever andadapted to engage with the said ratchet wheel, a pawl fastened to thesaid frame and also adapted to engage with the said ratchet wheel, and asecond foot lever for shifting the said drum together with the saidratchet wheel, to disengage the latter from the said two pawls,substantially as and for the purpose set forth.

3. In a foot brake for carriages, in combination with the actual brakemeans, a frame, a spindle turnably arranged in the said frame, a drumshiftably fixed on the said :Ipindle, a tension link connected to thesaid rum and to the actual brake means, an intermediate lever rigidlyconnected to the said spindle, and a foot lever connected to the saidintermediate lever, a ratchet wheel fastened to the said drum, a pawlconnected with the said intermediate lever and adapted to engage withthe said ratchet wheel, a pawl fastened to the said frame and alsoadapted to engage with the said ratchet wheel, a grooved roller rigidlyconnected to the said drum, a double-armed lever turnably arranged inthe said frame and having its one forked end in engagement with the saidgrooved roller, a second foot lever connected to the other end of thesaid doublearmed lever, and a spring on the said s indle for holding thesaid drum in its normafposition, substantially as and for the purposeset forth.

4. In a foot brake for carriages, in combination with the actual brakemeans, a frame, a s indle turnably arranged in the said frame, a rumshiftably fixed on the said spindle, a tension link connected to thesaid drum and to the actual brake means, an intermediate lever rigidlyconnected to the said spindle, a foot lever connected to thesaidintermediate lever and a spring for holdin the said intermediate leverand the said foot lever in the normal position, a ratchet-wheel fastenedto the said drum, a disk with a smooth circumference fastened to thesaid spindle and having a diameter which corresponds to that of the saidratchet wheel, less the length of the teeth, a pawl connected with thesaid intermediate lever and adapted to engage with the said ratchetwheel, a pawl fastened to the said frame and also adapted to engage withthe. said ratchet wheel, the two said pawls resting on the circumferenceof the said disk, a grooved roller rigidly connected to the said drum, adouble armed lever turnably arranged in the said frame and having itsone forked end in engagement withthe said grooved roller, a second footlever connected to the other end of the said doublearmed lever, a springon the said spindle for holding the said drum in its normal position,and means for securing the said drum and ratchet wheel in the engagingposition of the latter, substantially as and for the purpose set forth.

5. In a foot brake for carriages, in combi nation with the actualbrakemeans, asframe,

a spindle turnably arranged in the said I frame, a drum shiftably fixedon the said slpindle, a tension link connected to the said c rum and tothe actual brake means, an intermediate lever rigidly connected to the.said spindle, a foot lever connected to the said intermediate lever,and a spring for holding the said intermediate lever and the said footlever in the normal position, a ratchet wheel fastened to the said drum,a disk with a smooth circumference fastened to the said spindle andhaving a diameter which corresponds to that of the said ratchet wheel,less the length of the teeth, a

awl connected with the said intermediate ever and adapted to engage withthe said ratchet wheel, a awl fastened to the said frame and also acapted to engage with the said ratchet wheel, the two said pawls restingon the circumference of the said disk, a grooved roller rigidlyconnected to the said drum, a double armed lever turnably arranged inthe said frame and having its one forked end in engagement with the saidgrooved roller, a second foot lever connected to the other end of thesaid double-armed lever, a spring on the said s indle for holding thesaid drum in its norma' position, an male turnably arranged in the saidframe, a locksigned my name this 14th day of November ing piece fixed onthe said axle and adapted 1907, in the presence of two subscribing Wit-10 to secure the said drum 211?]. rlatciiet Wheel in nesses. the en 'ain osition 0 t e atter and 5 means to tii rn the said axle and ldckingCARL STROHKORB' piece, substantially as and for the purpose Witnesses:set forth. WOLDEMAR HAUPT,

In testimony whereof I have hereunto HENRY HAsPER.

